The earth is approx. 6,588,000,000,000,000,000 tons.
175
One third of the electricity produced on earth is used to power electric light bulbs!
75
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
A cubic yard of air weighs about 2 pounds at sea level.
31
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One barrel of petroleum holds 42 gallons.
20
The sun is 330,330 times larger than the earth.
75
